Nut-lock.



B. L. GARY.

NUT LOCK.

APPLICATION FILED FEB. 18, 1914.

1,122,901. Patented Dec. 29, 1914.

2 SHEETSSHEET l.

""E NORRIS PETERS 60.. PHOTO-LITHO 7 WA 5HIN 7 fl'N, u

Patented Dec.29,1914.

2 SHEBTSSHEET 2.

YHE'NORRIL PETERS c0 Pwzm 111 m vwhwnhrolv n c "uia'rrn as a rnNUT-LOCK.

Specification of Letters Patent.

Patented Dec. 29, 1914:

Application filed February 18, 1914. Serial No. 819,507. I

To all whom it may concern:

Be it known that I, BENJAMIN L. GARY, a citizen of the United States,residing at Madison, in the county of Morris and State of New Jersey,have invented certain new and useful Improvements in Nut-Locks; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

My invention relates to new and useful improvements in nut locks andconsists of simple and inexpensive nut locking means which positivelyprevents rotation of the nut and which may be locked in a most reliableand expeditious manner.

My invention aims to improve nut locks of the character described so asto render them more simple as to construction, reliable and eflicient inoperation, cheap to manufacture and commercially desirable.

The above and additional objects are accomplished by such means as areillustrated in the accompanying drawings, described in the followingspecification and then more particularly pointed out in the claims whichare appended hereto and form a part of this application.

7 With reference to the drawings, wherein I have illustrated thepreferred embodiment of my invention as it is reduced to practice, andthroughout the several views of which similar reference numeralsdesignate corresponding parts: Figure 1 is a side view of my improvednut lock showing it in assembled position, Fig. 2 is a side view showingmy nut lock in assembled position and at right angles to Fig. 1, Fig. 3is an end view of the device showing the locking plate removed, Fig. 4is a view similar to Fig. 3 with the locking plate in assembledposition, Fig. 5 is a detail perspective view of the locking plate, andFig. 6 is a detail perspective view of the locking member that isarranged to cotiperate with the locking plate illustrated in Fig. 5.

Referring to the drawings the numeral 1 designates a bolt having a head2, screw threaded terminal 3 and being flattened upon opposed sides asat 4: at its screw threaded terminal 3, for a purpose which will belater more fully described. A nut 5 is turned upon the screw threadedterminal 3 of the bolt 1. The nut 5 is provided upon one face with aplurality of radial grooves 6 extending from the edge of the boltreceiving aperture in the nut to the outer-edge thereof.

A locking member designated 7 as an entirety is adapted to be mountedupon the bolt 1 and arranged to hold the nut 5 in locked position. Thismember 7 consists of a single piece of preferably resilient wire that isbent intermediate its ends to form segmental base portions 8 and 9arranged in spaced opposed relation to each other and formed integralwith a curved bolt engaging loop 10 that is disposed between theportions 8 and 9, is approximately U-shaped and designed to engage andpartly encircle the bolt 1.

The members 8, 9, and 10 are all arranged in the same plane. The freeends of the member 7 are bent at right angles to the portions 8 and 9and provide spaced parallel arms 11 and 12.

A locking plate 13 having an approximately rectangular central opening14 is adapted to be mounted upon the bolt 1 and engage the outer groovedface of the nut 5. This plate 13 is preferably elongated and providedwith L-shaped slits 15 upon opposited sides of the opening 14 whichenable the provision of downwardly struck locking tongues 16. Thelocking tongues 16 are arranged to fit within certain of the grooves 6in the outer face of the nut 5. The longitudinal edges of the opening 11 are provided centrally of their ends with recesses 17 of sufficientsize to accommodate the arms 11 and 12 formed on the member 7.

In assembling the nut lock, the member 7 is positioned so that itsportions 8 and 9 engage the structure to which the bolt and nut isapplied and the Ushaped portion 10 partly encircles the bolt 1. The armsof the U-shaped portions 10 are adapted to engage the flat faces 4 ofthe screw threaded portion 3 of the bolt 1, while the arms 11 and 12 areadapted to lie parallel to and in engagement with the flat faces 41. Inthis connec tion it will be noted that the arms 11 and 12 are flattenedso as not to. interfere with the proper operation of the nut 5. Afterthe member 7 is positioned as described upon the bolt 1, the nut 5 isturned upon the bolt until it is adjusted to the desired position. YVhenthe nut is in such position the locking plate 13 is fitted upon theextended portion of the bolt 1 and arranged so that the looking tongues16 fit within certain of the grooves 6 in the nut 5. The nut 5 bein previously arranged so that the grooved ace is outermost. When the plate 13is positioned upon the bolt 1 and arranged to engage the outer face ofthe nut 5 the arms 11 and 12 are positioned within the recesses 17.These arms 11 and 12 are of sufficient length to eX- tend considerabledistance beyond the outer face of the plate 13 and are bent as at 18 tolie upon the outer face of the plate 13 as clearly shown in F ig. I. Thebending over of the ends of the arms 11 and 12- provide for the securelocking of the nut against rotation. The base portions 8 and 9 of themember 7 are as before stated interposed between the inner face of thenut and the structure to which the bolt and nut is applied.

It will be readily seen with reference to the foregoing description andaccompanying drawings, that my improved nut lock may be readily arrangedin looking position and moved out of locking position when it is desiredto remove the nut and that the nut is positively held against rotation.

The member 7 is held against rotation by the engagement of the U-shapedportion 10 with the bolt 1 after the manner described. The approximatelyrectangular opening 14c provided in the locking plate 13 preventsrotation of the plate upon the bolt as the bolt at the screw threadedportion 3 is formed approximately rectangular by form ing the flat faces4, described.

It will be readily seen by the locking ar-v rangement described that thenut is positively held against rotation and permitted ready removal fromthe bolt when desired.

In reduction to practice, I have found that the form of myinvention,,illustrated in the drawings and referred to in the abovedescription, as the preferred embodiment, is

the most efficient and practical; yet realizing that the conditionsconcurrent with the adoption of my device will necessarily vary,

I desire to emphasize the fact that various I minor changes in detailsof construction, proportion and arrangement of parts may be resorted to,when required, without sacrificing any of the advantages of myinvention, as defined in the appended claims.

What is claimed 1. A nut lock comprising a bolt, a nut turned upon saidbolt and having one face formed with a plurality of radial grooves, alocking member arranged between the inner face of the nut andstructureto which said bolt is applied and having arms extending parallel withand engaging opposite sides of said bolt and terminating beyond theouter face of said nut, a washer plate mounted upon said bolt andengaging the outer face of said nut, locking tongues formed on saidwasher plate and engaging certain. of the grooves in said nut, said armsbeing bent over and engaging the outer face of said locking plate, saidlocking member being held against rotation relative to the bolt.

2. A nut lock comprising a bolt, having its shank adjacent to one endformed with opposed flat faces, a nut having one face provided with aplurality of grooves turned on said bolt, a locking member mounted uponsaid bolt in advance of said nut and comprising segmental base portionsarranged to engage the inner face of said nut and a U-shaped boltengaging portion and a pair of spaced arms arranged to engage and extendlongitudinally of the flat faces of said bolt through and beyond theouter face of said nut, a centrally apertured looking plate mounted uponsaid bolt and engaging the outer face of said nut, locking tonguesformed on said locking plate and engaging certain of the grooves in saidnut, said arms being bent over and engaging the outer face of saidlocking plate.

3. In a nut lock the combination with a bolt having opposed fiat facesformed adjacent one end and a nut having grooves in one face and mountedupon said bolt of a looking member formed of a single piece of wire andbeing bent intermediate its ends to provide segmental base portionsarranged to engage the inner face of said nut, a U- shaped bolt engagingportion formed integral with the base portions and having spaced armsformed integral with the base portions and being flattened and engagingthe flat faces of said bolt, said arms extending through and beyondsaidnut, a centrally apertured locking plate mounted upon said bolt, andtongues formed on said locking plate adapted to engage certain of thegrooves in said nut, said locking plate having opposed recesses openinginto the central aperture thereof and receiving said arms, said armsbeing bent to lie upon the outer face of said locking plate.

In testimony whereof I affix my signature in presence of two witnesses.

BENJAMIN L. GARY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents.

Washington, D. G."

